heat engine equipped with a turbocharger and method for controlling the pumping against the turbocharger

The invention relates to a heat engine comprising a compressor for compressing a gas to permit the input of a combustion chamber and a metering device arranged at the compressor outlet and controlled by a control unit so as to regulate a mass flow gas.The housing e is arranged to implement a method comprising a limiting step (113) wherein a minimum mass flow rate is calculated based on a compressor compression ratio scanned in real time so as not to cross a surge limit. the invention finds application in the automotive field.